in other words you have no idea. go online and look at the score of those at the top. that is not the definition of skill, that is the definition of being skilled how the scoring works.
semp
Uh, what? I just told you how that system works. I borrowed it as an example and gave you the quick and dirty example rather than the dissertation version a few posts above me. The exact nuts and bolts (numbers behind the scenes) nope, don't know. But nobody outside of the people that made the game do. I can tell you how that particular system works in more detail, but it would likely go over your head anyway. Copy pasta below of the in depth explanation. It's really not that much different from the score system already in place.
Qualifying and Ranks
A new player is expected to qualify before entering a league. They must take part in 5 qualifying matches before being put into a league and division.
After a hidden[4] period of time, their skill level will be reevaluated.[5]
Players gain points for defeating opponents, especially stronger opponents. Before a match starts, players can compare their ratings – usually, one player will be "favored" over the other. If a player defeats a favored opponent, they will gain more points than if they defeat a weaker opponent. Players also gain points from a bonus pool (sometimes called "rested points")[4] for periods of time they have not been playing for. Players gain these points at a slow rate when they're not playing, up to a cap at the end of the season. When a player who has accumulated bonus points wins a match, they gain a share of bonus points equal to the number of points gained for winning the match.[4]
When a player gains points, they increase their rank and may even shift leagues. A player that loses points will, in turn, lose rank and can fall to a lower league.[4]
On occasion, a player will face opponents from a higher league, in order to test their skill.[4]
Playing more games results in a more accurate skill level.[6]
The internal rating is not wiped or reset when league ladders are wiped and is separate from ladder points.[6]
To gain a league rank, a player usually needs to earn the number of division ladder points shown on these charts.[7] (OUTDATED)
Each team has a separate skill rating. Individual team mates have very little effect on the team rating, except to determine what placement matches they are put in.[6]
League Types
As of Heart of the Swarm, Blizzard changed the league percentages as follows: Bronze 8%, Silver 20%, Gold 32%, from the previous 20% each.[8]
The Diamond league has 18% of the players in it.[6]
League Type Notes
Grand Master League Consists of the top 200 players on the server, and has been available since patch 1.3.[9]
Players qualified for the league following the first week of a season as of October 24th, 2011, the start of the fourth season.[10] Inactive players who allow bonus points to accumulate will automatically be removed from the league.[11]
A list of the winners, updated in real time, can be found on the Grandmaster League page on the official Blizzard site.
Master League This league represents the top 2% of StarCraft II players in a region.[12] This league was added in patch 1.2 in January 2011.[13] It is available for 1v1 through 4v4 matches.[14]
Diamond Only has 18% of players to allow for the 2% in Master league.
Platinum Standard league. 20% of players
Gold Standard league. 32% of players.[8]
Silver Standard league. 20% of players.[8]
Bronze Standard league. 8% of players.[8]
Practice Features slower-speed games with novice anti-rush maps for newer players. Players can play only 50 practice matches, and only upon creating an account. Once a player leaves (voluntarily or otherwise), they may not return. Blizzard Entertainment is trying to prevent "smurfing" of this area.[15][16]
Divisions
Each league is split into divisions of about 100 players from the same area of very similar skill levels.[17] Players are ranked against each other, and there are seasons of play. Tournaments held at the end of a season will determine division winners, who then compete for League championships.[18]
Divisions have names such as "Silver Tal'darim Bravo". These names can be any reference to the StarCraft universe: the original game (ex.: Reaver, Valkyrie, Duran), novels (Ramsey, Bhekar Ro), mangas (Artika, Phash) and even StarCraft: Ghost (Grizzly).
The top eight players in each division qualify for tournament play.[19]
The pro league does not have divisions.[20]
Prior to 2012 season 4 not all divisions were created equal, but this wasn't transparent. Blizzard removed these tiers, meaning someone's rank in their division is giving a more accurate representation of their skill.[21]
Damn, and I thought using the starcraft system would be a decent simple example...

/edit bustr, the difficulty in making the maps makes zero difference if they don't put them in rotation anyway. And as far as complexity goes, seems that HTC realizes matchmaking (at least on some level) is wanted otherwise it wouldn't be in the works. Some people, and I'm included in that group, get bored of the endless sandbox experience.